Total entries: 308170 Books: 10981 Journal Articles: 243326 Proceedings Articles: 53863
| Year(s) | Total | Books & | Journal | Proceedings/ | |
| Entries | Proceedings | Articles | Edited book | ||
| Volumes | Articles | ||||
| Up to 1974 | 15949 | 57 | 15000 | 892 | |
| 1975 - 1980 | 33734 | 2036 | 25252 | 6446 | |
| 1981 - 1990 | 80551 | 4517 | 58445 | 17589 | |
| 1991 - 2000 | 99036 | 3776 | 77296 | 17964 | |
| 2001 - 2005 | 48081 | 572 | 40020 | 7489 | |
| 2006 | 9027 | 8 | 7473 | 1546 | |
| 2007 | 7414 | 8 | 6674 | 732 | |
| 2008 | 7519 | 5 | 6907 | 607 | |
| 2009 | 6526 | 2 | 5926 | 598 |
Journals indexed: 2062
